© 2012 The NEED Project P.O. Box 10101, Manassas, VA 20108 1.800.875.5029 www.NEED.org 9

Magnetic Fields of Force

MASTER

10 Wonders of Magnets

Earth’s Magnetic Field

MASTER

© 2012 The NEED Project P.O. Box 10101, Manassas, VA 20108 1.800.875.5029 www.NEED.org 11

Magnets 1

" QuestionHow do bar magnets behave when their poles are in the same position or opposite?

Û ConclusionWhat did you learn?

PREDICTION RESULT

12 Wonders of Magnets

Magnets 2

" QuestionHow do horseshoe magnets behave when their poles are the same position or opposite?

; ProcedureStep 1: PREDICT: Look at Picture 1. Predict what will happen below.

Step 2: EXPERIMENT 1: Place the magnets together like in Picture 1. Record your observation below.

Step 3: PREDICT: Look at Picture 2. Predict what will happen.

Step 4: EXPERIMENT 2: Place the magnets together like in Picture 2. Record your observation.

Step 5: PREDICT: Look at Picture 3. Predict what will happen.

Step 6: EXPERIMENT 3: Place the magnets together like in Picture 3. Record your observation.

Step 7: PREDICT: Look at Picture 4. Predict what will happen.

Step 8: EXPERIMENT 4: Place the magnets together like in Picture 4. Record your observation.

Step 9: PREDICT: Look at Picture 5. Predict what will happen.

Step 10: EXPERIMENT 5: Place the magnets together like in Picture 5. Record your observation.

PREDICTION RESULTPicture 1: attract repel attract repel

Picture 2: attract repel attract repel

Picture 3: attract repel attract repel

Picture 4: attract repel attract repel

Picture 5: attract repel attract repel

Û ConclusionWhat did you learn?

© 2012 The NEED Project P.O. Box 10101, Manassas, VA 20108 1.800.875.5029 www.NEED.org 13

Magnets 3" QuestionWhich materials will a magnet attract?

Some materials attract magnets and other materials do not.

; ProcedureStep 1: PREDICT: Predict which materials the magnets will attract in the Prediction column.

Step 2: EXPERIMENT 1: Touch the N pole of Bar Magnet 1 to each material. Record your data in the Result column.

Step 3: EXPERIMENT 2: Touch the S pole of Bar Magnet 1 to each material. Record your data in the Result column.

PREDICTION

Paper yes no

Glass yes no

Wood yes no

Plastic yes no

Cloth yes no

Metal yes no

Water yes no

RESULT

N POLE S POLEPaper yes no yes no

Glass yes no yes no

Wood yes no yes no

Plastic yes no yes no

Cloth yes no yes no

Metal yes no yes no

Water yes no yes no

Û ConclusionWhat did you learn?

14 Wonders of Magnets

Magnets 4

" QuestionAre all metals attracted to magnets?

; ProcedureStep 1: PREDICT: Look at the four samples of metal. Predict which metals the magnets will attract in the

Prediction column.

Step 2: EXPERIMENT 1: Touch the bar magnet to each metal. Record your data in the Result column.

Step 3: PREDICT: Look at the coins. Predict which coins will be attracted to the magnet in the Prediction column.

Step 4: EXPERIMENT 2: Touch the bar magnet to the coins. Record your data in the Result column.

PREDICTIONCopper yes no

Brass yes no

Aluminum yes no

Steel yes no

Penny yes no

Nickel yes no

Dime yes no

Quarter yes no

RESULTCopper yes no

Brass yes no

Aluminum yes no

Steel yes no

Penny yes no

Nickel yes no

Dime yes no

Quarter yes no

Û ConclusionWhat did you learn?